Platen-carriage for type-writers.



nwavron, feat-961720.92

ATTORNE rs Patented June 13,1911.

G F ROSE PLATBN CARRIAGE FOR TYPE WRITERS APPLICATION FILED 001.11.1909.

WITNESSES:

' of its parts.

GEORGE F. ROSE, OF NEW YORK, N. Y.

PLATEN-CARRIAGE FQR TYPE-WRITERS.

Specification of Letters Patent.

Patented June 13, 1911.

Application filed October 11, 1909. Serial No. 522,113.

To all whom it may concern:

Be it known that'I, GEORGE F. Rose, a citizen of the-United States, residing in the city of New York, borough of Manhattan, county and State ofNew York, have invented acertain new and useful Platen-Carriage for Type-VVriters, of which the following is a specification.

This invention and more particularly to the platen carriage thereof. 1

The carriage of this invention is adapted for use in connection with foldable typewriters of the class disclosed in United States Letters Patent No. 754,242, dated March 8, 1904, wherein said carriage is supported on a foldable support whereby it may, when in an inoperative position, be folded into substantially overhanging relation to 'a key board. It is to be understood, however, that my new carriage may be used in epnnection with any. other class of typewriters. I have stated that the invention is adapted for foldable typewriters for the reason that said machines are compact in construction and light in weight for convenience in transportation by traveling salesmen, etc.

The object of this invention is to reduce the weight and simplify the construction of the platen carriage, while insuring the rigidity and stiffness of the carriage to stand the strain without bending or buckling, in any My new carriage is of light weight, its parts are reinforced and stayed so that it will not become twisted or distorted by cross and diagonal strains, and it is, moreover, economical to manufacture.

My invention is characterized b pressed sheet metal in the construction ot the carriage, the same comprising bottom and end members struck up from a blank of sheet metal, preferably of pressed steel. The metal is first stamped or blanked out from a sheet of the required gage, and the parts are thereafter bent, whereby upstanding end pieces and ,depending flangesare produced on abottom member. Said end pieces are adapted to support the platen, together with several or, all of the devices associated with the platen for operating said platen and for feeding and controlling the paper, where as the depending flanges constitute the track rails for supporting the carriage in its sliding travel upon th machine frame.

pertains to a typewriter,

The bottom member of the carriage is,

preferably, ribbed by pressing the metal, said rib' construction being for the purpose of precluding any twist or distortion of the carriage by transverse and diagonal strains. As one embodiment of this part of the invention, the bottom member is provided with a sinuous rib extending across and lengthwise of the carriage, but it is considered important to provide said bottom member with a straight central rib extending lengthwise of the carriage, said rib V rack with which cooperates the escapement dog or dogs adapted to regulate the sliding movement of the carriage. In the accompanying drawings I have illustrated one practical embodiment of the invention, but the construction shown therein is to be understood as illustrative, only, and not as defining the limits of the invention.

Figure 1 is a plan view of a sheetmetal blank from which the carriage ofthis invention is adapted to be produced. Fig. 2 is a plan view of the carriage. Fig. 3 is a side elevation of the carriage shown in Fig. 2. Fig. 4 is a cross section through the carriage on the line 4-4 of Fig. 2 showing the platen cylinder and a-base upon which the carrlage is adapted to slide. 1

In Fi -l of the drawings I have shown a blank, i, .from which the carriage for a typewriting machine is adapted to be produced in accordance with this invention. The blank comprises a body portion, a, end portions, 6, b, and side portions, 0, 0. The blank is adapted to be bent transversely on the dotted lines, d, d, and longitudinally on the dotted lines, 6, e.

accommodating a Blank, A, is composed of sheet metal,

preferably of steel of the required gage, and the-end portions, 1), b, of said blank are shaped as shown in Fig. 1 so as to produce the desired end members of a laten carriage. W'hile end members, 6,1), ave the shape shown in Fig. 1, it is not desired to limit the invention to the particular contour, nor tothe exact number and arrangement of perforations, f, in said end members.

After stamping the blank, A, I proceed to bend it transversely at its end portions and on the clotted lines, d, (1, thereby producing the ups 'anding end sections, B, B, on the bottom member, A. I The blank is,'furthermore, bent on the dotted lines, e, 6, so as to produce the depending flanges, E, E, one of the side portions, 0, producing the flange, E, and the other side portion roduoing the flange, E, see Fig. 4. The anges extend lengthwise of bottom member,,,A end, they are positioned at the respective sides thereof. The flan e, E, is somewhat wider than flange, E and saidflanges areflparallelto each other.

At the time of, or after stamping blank, A, it shouldbe punehedorperforatedzso as to produce the openings, f, inthe endmem hers, 6, prior to bending the parts, I), seas to produce the endlinem hers, B, B. The 0 en ings, f,'inlthe endmemhers -B, of the rink accommodate the pivotul Shaft for a, platen cylinder, 0, and thepivots of'vw'mus other:-

- devices which are associated w ithithe platen and the carriage for the purpose of operating saidplaten and the carriage, and; for supporting-the rods, one indicatedatrG 1n 4, towhich the paper table and th p agerguides may be attached.

designetes a rib which is pressed in the. metal composing bottom member, A, off-the. carriage. This rib extendslengthwise of;

- said bottom member, and it: is positioned centrally thereon, therib being between end members, B, B, ofithe carriage.v The rib, B, extends upwardly from the upperface Ofi bottom member, A, and'said; ribis chambered or-hollow, asshown more clearly in Fig. 4, the rib opening through the under faceof the bottom member,A. Within said rib, D, ,is a rack, F, said rack forming; element. of an .escapement' mechanismwhich is associated with the carriage for the i purpose oflimiting itsendwise movement: to

1s -prov1dedon its lower edge with a r a. sstsg by step movement. The rack is-compreferably, (if-tempered steel; and it plurality-,of-Lteeth',.f-.' The-rack is fitted :tig itly-in the chambered part ofiupste-ndin dongitu dinel rib, D,= so thstit is, retain secm'elyt in position by frictional engagement with:

-the& walls ofthe chamber, and tiffdesired, the

metal composin'g the hollow rib ,maybecome pressed or crimped around-or mto engage-- ment with the metal composing-therack rib, D, bottom member, A:,

Thelower-edge of the rack, said edge having the teeth, f, depends from the under-surface of bottom member, A, and with the teeth of 'said rack is adapted 'to engage the pawl or paw ls which control the-feed movement of! the-carriage in the usual or in any preferred.

{1 addition to the longitudinal; control. of theearriuge is provided with cross ribsiwhiehare. essed! up from the -metel composing said ottom:

memben-and .in a 'referrediformof the additional ribs, bottom member ispro-- vided with asinuous rib, G, the letter: interseeting. with centre-l! rib: D, substantiallyintegral piec'eofmetal, and it is economical;

to manufacture. The side flanges and the 1 ribs impart a certain degree of stiffness and rigidity to the carria e,,and the stifiness is supplemented by em eddi rack, F, into the channel'o-f central rib, J Endmemhers, B, B, are united by the pivotal shaft or platen, O, and by one or more rods which supportthe paper table and the pa' er clips -(not shown), so that theend mem ersare not liable to movement relative to each other, nor. can they spread b the operation of the platen cylinder by t e feed of the paper into contact-With said cylinder. e

Oneilange of the carriage cotiperates with rollers, H, whereas the other flange engageswith tlie'guide, I, said rollersend the guide being on a. base member, J, as shown in Fig. 4. The guide, I, and the. base, J, may be composed of aluminium when the other parts ofthe ty-pewriting. ma'chine are made of this metal in order tosecure lightness, but if desired, said; guide, I, may be composed of steel. As shown, the guide is provided with a longitudinal channel or groove, 2', into which fitsthe narrow depending flange, E, on the-bottom member, A, of

the-carriage, The rollers, H, one of which s shown U11Fig. t, ere mounted on base, J, torotate-freely thereon, and with each roller engages thelower edge of the wider flange, E, on bottom member, A, of the can s-riage. By making-the flanges, E,'E','of different widths, the carriage' is brought intocoiiperativerelation to the rollers and to-theguide reil.' Therail preventsany 'sidewisemotion of the carriage because .fien'ge, E, fits snugly in the groove, 2', where" 'as rollers, .H,'1insure easy movement to the carriage when it-slides along base, J The flanges, E, E, support the-Qbot'rom member, 2A, ofrthe carriage-in a.-.raised position and ialloweinple spaeebelow said bottom member, .A .for the operation of the escepement :dogs--(not shown)- said dogs beingndepted afar engagementwith teeth, f, of-rack, F,

; -Byetampu'ig blank, A, and perforati its-end pieceset one operation, economy :accnracy; are secured 1n the manufacture of the blank. Ill-.deeiredcertein of'the'hds,

f, in thehlaikk mayhepmvided Wid hs-c01 lar formed by punching out or displacing the metal of the holes, said collar or collars being adaptedto support the rivets, screws or shafts of some of the working parts to be supported on the carriage.

ack, F, may be held in hollow rib, D, of the carriage by frictional engagement therewith, as described, or said rack may be held in position by other means, such as by the employment of s rews adapted to pass through the carriage'or its rib, D, and enter holes in, the rack. A most important advantage is that the in place withinthe hollow rib or part of the carriage, so that said rack is laterally stiffened by the carriage and is held in an accurate, tiiue position relative "to the other 'partsof the escapement mechanism, said rack being so supported that ittcannot be displaced laterally.

Having thus fully described the invention,

What I claim as new, and desire to secure by Letters Patent is:

1. A typewriter carriage composed of pressed sheet metal and formed from a blank which is bent to produce a bottom member, upstanding end members, :i'plnrality of depending flanges, said flanges being positioned at'the front and rear edges of the carriage and extending lengthwise of the bottom member thereof, and guiding means which coiiperate with said flanges for directing the longitudinal moifdment of said carriage.

2. A typewriter carriage composed of pressed sheet metal and formed from a blank which is bent to produce a bottom member, end members extending upwardly from the bottom member, a plurality of depending flanges positioned at the front and rear of the carriage, respectively, said flanges extending lengthwise of the bottom member, one of said flanges being wider other flange, and guiding means which cooperate with said flanges for directing the longitudinal movement of the carriage.

3. A't-ypewriter carriage composed of pressed metal and formed from a blank which is bent to produce a b0ttom.member and a plurality of flanges, said flanges being positioned substantially at the front and the rear, respectively, of the bottom member and extended lengthwise of said bottom member, and separate guidingmeans cooperating with the respective flanges for directing the longitudinal movement of said carriage.

4. A typewriter carriage composed of pressed sheet metal and formed from a blank which is bent transversely near its ends to produce upstanding end members, and is bent, also, in the direction of its length to produce a plurality of depending flanges, said depending flanges extending lengthwise rack is braced or stayed Y than the I A. i

of the carnage and positioned substantlally at the frontand rear, respectively, ot said carrlagemnd guiding means wlnch co'iiperate with said flanges for directing the longi-' tudinal movementof said carriage.

5. A typewriter carriage provided with a pressed metal bottom member, and with a plurality of integral depending flanges, said flanges extend ng lengthwiseof the carriag' and positioned substantially at'lhe front and rear, one\ of said flanges being Wider than theotherflange, a guide member cooperating with sand .wlder flahge, and a chamieled guide member within which the narrow flange is slidably fitted.

6. In a typewriter, with a pressed metal botto'n member having a plurality of longitudinal depending flanges positioned substantially at the front and rear, respectively; of said carriage, one

of said flanges being wider than the other,

roller cooperating with the wider flange, and a grooved guide rail fixed relatiyely to the carriage, and within the groove of which rail is shdingly fitted the narrow flange of said bottom member.-

7. In a typewriter. a. carriage provided with a pressed metal bottom member having longitudinal depending flanges, said flanges being positioned front and rear, respectively, of the carriage, a guide roller cooperating with one of said flanges, and afixed guide member coiiperating with the other of said flanges.

8. In a typewriter, a carriage provided witha pressed metal bottom meanber and with a plurality of longitudinal de ending flanges, one of said flanges being wi er than the other, a-guide rollercooperating with one of said longitudinal flanges, and a fixed guide rail coiiperating with-the other of said longitudinal flanges.

In a typewriter carriage, a unitary pressed metal bottonrmember provided with a. plurality of integral longitudinal depending guiding flanges, a longitudinal hollow integral rib extending upwardly from the face of said bottom in a plane intermediate the depending a guide flanges, and an eseapement rack confined.

partly within said hollow rib, whereby lateral distortion of the rack is precluded by the engagement ofthe tom member.

10. In a typewriter carriage, a unitary pressed metal bottom member provided with a longitudinal chambered integral rib positioned' intermediate thev front and rear edges of said bottom member, said rib extending upwardly from the top surface of the carriage and the chamber of said rib opening through the bottom surface of the carriage, and an cscapcmenl: rack separate .'rom the bottom member, said ruck being substantially at the member and positioned rack with said bota carriage provided and provided at its front and rear edges housed partly within the chambered rib and said rack being retained from lateral distortion by contact with the walls of said rib.

11. In a typewriter carriage, a unitary pressed. metal bottom member provided at its front and rear edges with longitudinal depending guide flanges, a longitudinal hollow rib positioned intermediate said depending flanges, and a reinforcing rib extending transversely of the bottom member and. substantially intersecting with said longitudinal rib, said ribs and flanges being integral with the bottom member.

12. In a typewriter carriage, a unitary pressed metal bottom member provided at its front and rear edges with depending longitudinal guide flanges, a hollow rib extending upwardly from the bottom member with longitudinal depending guide flanges, a hollow rib positioned centrally"on said flanges inte bottom member and extending 1e Wise thereof, said rib being in a horlzonta plane above the depending flanges and member and positioned intermediate the hollow rib and said depending flanges.

14. In a typewriter, a unitary carriagecomprising a pressed steel bottom memberf sltioned parallel thereto, and a sinuous r1 extending transversely with respect to the bottom and membersextending upwardly from an integralwith said bottom member, guide a1 with the -bottom member.

anddependmg therefrom, said flanges extending lengthwise of the bottom member, and positioned at the front and rear edges,

, respectively, of the same, a hollow rib integral with the bottom member and positioned 11: a plane between said depending flanges and above the same,'and a transverse rib .g

also integral with the bottom member and positioned intermediate the hollow rib and the depending flanges. I

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

GEORGE F. ROSE.

Witnesses:

' H. I. BERNHARD, JAB. H. GRIFFIN.

Gopies of this patent may obtained tor five cents oath, by addressing the commissioner of patents,

Washington, D. G. 

